(19)
(11) EP 0 321 280 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.12.1989 Bulletin 1989/51

(43) Date of publication A2:
21.06.1989 Bulletin 1989/25

(21) Application number: 88311940.6

(22) Date of filing: 16.12.1988
(51) International Patent Classification (IPC)4: F16J 15/16
(84) Designated Contracting States:
DE FR GB

(30) Priority: 18.12.1987 JP 192025/87 U
06.05.1988 JP 59909/88 U

(71) Applicants:
  • NOK CORPORATION
    Tokyo 105 (JP)
  • TOYOTA JIDOSHA KABUSHIKI KAISHA
    Aichi-ken (JP)

(72) Inventors:
  • Sowa, Mitsuhiro
    Fujisawa-shi Kanagawa-ken (JP)
  • Tabata, Masaaki
    Toyota-shi Aichi-ken (JP)

(74) Representative: Jenkins, Peter David et al
PAGE WHITE & FARRER 54 Doughty Street
London WC1N 2LS
London WC1N 2LS (GB)


(56) References cited: : 
   
       


    (54) Sealing assembly


    (57) A sealing assembly (4) is used to seal the gap between the two member (1, 2) that move relative to each other. It includes first and second rings (5, 6) provided in a groove (3) formed in one of the members. A portion of the outer peripheral surface of the first ring (5) is in contact with the other member. None of the surfaces of the second ring (6) makes contact with the other member. The second ring (6) engages with the portion of the first ring (5) which is not in contact with the other member. The second ring (6) has a coefficient of thermal expansion smaller than that of the first ring (5). When the first ring (5) expands due to the heat generated by the slide of the first ring (5) against the other member, the expansion of the first ring (5) is limited by the second ring (6).







    Search report